论文标题
Meerkat对附近的Novalike灾难性变量的调查
A MeerKAT Survey of Nearby Novalike Cataclysmic Variables
论文作者
论文摘要
我们介绍了附近11个灾难性变量的11个杂志无线电观察结果。我们已经检测到IMERI,RW性别,V3885 SGR和V603 AQL的无线电排放。虽然先前检测到的RW性别,V3885 SGR和V603 AQL,但这是对IM ERI的第一次报道的无线电检测。我们的观察结果将非磁性简历的样本与敏感的无线电数据增加了一倍。我们观察到,在我们的无线电检测极限下,需要特定的光学光度$ \ gtrsim 2.2 \ times 10^{18} $ erg/s/hz(对应于$ m_v \ lyseSim 6.0 $)才能产生无线电检测。我们还观察到,我们所检测到的NovAlikes的X射线和无线电照明是$ L_ {X} \ Propto l_ {r}^{r}^{\ sim 0.7} $最初建议非抑制中子中子恒星X射线X射线二线二元组的功率定律。我们发现,对于现有的无线电检测非磁性CVS样本的其他波段或任何其他系统参数,无线电发射与排放之间没有其他相关性。我们测量与早期工作的报告一致的带(0.9-1.7 GHz)无线电光谱指数。最后,我们从已发布的多波长数据为样本构建了广泛的光谱能量分布,并使用它们对这些系统的传质率施加了约束。
We present the results of MeerKAT radio observations of eleven nearby novalike cataclysmic variables. We have detected radio emission from IM Eri, RW Sex, V3885 Sgr and V603 Aql. While RW Sex, V3885 Sgr and V603 Aql had been previously detected, this is the first reported radio detection of IM Eri. Our observations have doubled the sample of non-magnetic CVs with sensitive radio data. We observe that at our radio detection limits, a specific optical luminosity $\gtrsim 2.2\times 10^{18}$ erg/s/Hz (corresponding to $M_V \lesssim 6.0$) is required to produce a radio detection. We also observe that the X-ray and radio luminosities of our detected novalikes are on an extension of the $L_{X} \propto L_{R}^{\sim 0.7}$ power law originally proposed for non-pulsating neutron star low-mass X-ray binaries. We find no other correlations between the radio emission and emission in other wavebands or any other system parameters for the existing sample of radio-detected non-magnetic CVs. We measure in-band (0.9-1.7 GHz) radio spectral indices that are consistent with reports from earlier work. Finally, we constructed broad spectral energy distributions for our sample from published multi-wavelength data, and use them to place constraints on the mass transfer rates of these systems.